serve as a repository for information on these interface and any incompatable
changes we've made.
+2001-02-26:
+ A DECL_INITIAL of NULL_TREE or error_mark_node in a VAR_DECL is no longer
+ taken to signify a tentative definition which should not be emitted until
+ end-of-file. Frontends which want that behavior should set
+ DECL_DEFER_OUTPUT before calling rest_of_decl_compilation.
+
+Aug 31, 1998:
+ The interface to HANDLE_PRAGMA has changed. It now takes three arguments.
+ The first two are pointers to functions that should be used to read characters
+ from the input stream, and to push them back into the input stream respectively.
+ The third argument is a pointer to a null terminate string which is the first
+ word after #pragma. The expression supplied by HANDLE_PRAGMA should return
+ non-zero if it parsed and implemented the pragma. Otherwise it should return
+ zero, and leave the input stream as it was before the expression was evaluated.
+
+ A new back-end definable macro has been added: INSERT_ATTRIBUTES. This macro
+ allows backend to add attributes to decls as they are created.
+
+Jun 10, 1998:
+ The interface to lang_decode_option has changed. It now uses and argc/argv
+ interface to allow for options that use more than one input string. The new
+ declaration is: int lang_decode_option (int argc, char** argv). It now
+ returns the number of input strings processed, or 0 if the option is
+ unknown.
+
+Jun 7, 1998:
+ Front-ends must now define lang_init_options. It is safe for this
+ function to do nothing. See c-lang.c.
+
+Apr 21, 1998:
+ Front ends which link with c-common or other files from the C/C++
+ front-ends may need to handle TI types. Look for references to
+ [unsigned]int_DI_type_node in your front end. If you have references
+ to these variables, you'll need up update the front end.
+
+ To update the front end you must mirror all the code which currently
+ deals with intDI_type_node to also handle intTI_type_node.
+
+
Apr 7, 1998:
The interface between toplev.c and the language front ends for opening the
source file has changed:
In an effort to decrease cache thrashing and useless loads we've changed the
third argument to the DEFTREECODE macro to be a single char. This will
- effect languages that defined their own tree codes (usually in a .def file).
+ affect languages that defined their own tree codes (usually in a .def file).
Old way:
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